May · Belgium
Best time to visit Brussels in May Weather, crowds & prices
Weather in Brussels in May
Average temperature 14°C, 77 mm of rain, about 21 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.2/10
Ranked #4 of 12 months
- Avg temp
- 14°C
- Rainfall
- 77 mm
- Humidity
- 80%
- Days with 6h+ sun
- 21
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Brussels scores 8.2/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 14°C, 77 mm of rain, and roughly 21 days with 6+ hours of sunshine this month.
Grand Place grandeur, chocolate shops, and Art Nouveau streets peak May through September.
May in Brussels: strong conditions, 4th of 12
Temperatures hover around 14°C (58°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 77 mm of rain this month — a flexible day or two helps — with about 21 days with 6+ hours of sunshine and 15.3 hours of daylight to work around it.
That is 8.2/10 on the same scale — 4th of 12 months, versus 8.9/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Brussels in May?
- In May, Brussels averages 14°C, 77 mm of rain, and about 21 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is May a good time to visit Brussels?
- May earns a 8.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Brussels in May?
- Expect about 77 mm of rain in May. Average humidity is 80% and there are about 21 days with 6+ hours of sunshine.
Curated in Brussels
Tickets & experiences
Things to do in Brussels
Brussels, Belgium. Live activities and tours from GetYourGuide, matched to this destination.